You are quite correct. There is a fallacious notion out there that farming in temperate northern climates somehow requires more foresight than farming in tropical climates, and therefore the northern farmer acquired greater intellect than the lazy tropical farmer who merely has to pick bananas off a tree.
This idea is completely false, and is spread by those who have no notions of the difficulties of tropical agriculture. Predators, plant and animal diseases, and crop destroying insects, as well as thin calcareous soils, and extended dry seasons followed by torrential wet seasons are just a few of the factors that make tropical agriculture far more difficult than temperate climate agriculture.
Also note that simply clearing a plot of jungle for planting is highly laborious
The biggest bean predator is called "The Colorado Bean Beatle".
It is, in fact, the only serious bean predator in that region.
You go to the tropics and subtropics and there are THOUSANDS of bean predators.
Mexico's primry cuisine is based on the use of beans. That one country purchases 90% of America's bean crop ~
It's a good deal for the Mexicans and a good deal for the American bean farmers.